Sediment Management in the Restoration of Large Lowland Rivers and Floodplains in the United States
Recent decades in the United States, have witnessed a reappraisal of how rivers and their floodplains should be managed. The general trend is towards naturalization of flow regimes and the re-establishment of sediment fluxes, river channel mobility, and of the hydraulic and biotic connections between river channels and their floodplains within the bounds of the control that is required for public safety. The intentions of this policy include reducing damage from flooding, reducing the cost of river control, improving biological productivity and diversity, and conserving esthetic values. This new management strategy requires new understanding of how river channel and floodplain dynamics are driven by natural and managed river discharge regimes and sediment supplies from the drainage basin. This is in contrast to earlier research strategies which tended to concentrate on how steady-state channel forms are scaled to a single channel-forming discharge and the effects of overbank discharges in connecting the channel to its floodplain were lesser interests. We describe some elements of a research agenda for understanding and predicting the dynamic interactions of channels and floodplains and the resulting landform and habitat complexity.
River Restoration Sedimentation Fluvial Geomorphology
Thomas Dunne José A.Constantine Michael B.Singer Kingdom
Bren School of Environmental Science and Management University of California,Santa Barbara,Californi School of Earth and Ocean Sciences,Cardiff University,Cardiff CF10 3YE,United Kingdom School of Geography and Geosciences,University of Saint Andrews,Fife,Scotland,KY16 9AL,United International Forum on Water Resources and Sustainable Development Wuhan University,Sept.22-24,2009
国际会议
International Forum on Water Resources and Sustainable Development(2009水资源与可持续发展高层论坛)
武汉
英文
82-95
2009-09-22（万方平台首次上网日期，不代表论文的发表时间）